Method and machine for making paper tubes



J. N. FRANCIS METHOD AND MACHINE FOR MAKING PAPER TUBES Nov. 6, 1928.

Filed April 16, 1925 6 Sheets-Sheet l 6 Sheets-Sheet 2 NNN J. N. FRANCIS@www Filed April 16, 1925 METHOD AND MACHINE FOR MAKING PAPER TUBES Nov.6, 1928.

Nov. 6, 1928. 1,690,287

J. N. FRANCIS METHOD AND MACHINE FOR MAKING PAPER TUBES Filed April 16,1925 6 Sheets-Sheet 4 1mm Q @wl/wai;

Nov. 6, 1928.

J. N. FRANCIS METHOD AND MACHINE FOR MAKING PAPER TUBES Filed Apri1'1e,1925 6 Sheets-Sheet 5 Nov. 6, 1928.

J.- N. FRANCIS METHOD AND MACHINE FOR MAKING PAPER TUBES Filed -April16, 6 Sheets-Sheet 6 Patented' Nov. 6, 1928.

UNITED STATES PATENT OFFICE.

JOSEPH N. FRANCIS, OF WOBRN, MASSACHUSETTS, ASSIGNOR TO STANDARD COIN`WRAPPIRS, INC., OF BOSTON, MASSACHUSETTSA 'CORPORATION OF MSSACHU-SETTS.

i' METHOD AND MACHINE FOR MAKING PAPER TUBES.

Application led April 16, 1925. Serial No. 23,497.

This invention relates toV a method and machine for forming up papertubes, each having one end beaded inwardly so as to retain "the tuberolled without the use of adhesive and so as to form an internal ledgeagainst which may rest one end of a stack. of coins or similar articlesfor which the tube is designed to serve as a container.

According to this invention the paper, cut in strips slightly lwiderthan the length ot the finished tube and which may be rolled, is ledthrough a device for ironing out the curl produced by being rolled, isthen printed,v

if it is desired to have printed matter appear on the iinished tube, isthen cut successively into lengths between the printed portions, andthese lengths are then successive'- ly rolled into tube form and one endbeaded f Beside thel general method and machine organization thisinvention comprises various mechanisms for performing certain of thesteps of the method, and advantageous details and combinations of partswhich will appear from a more complete description ot' embodimentsthereof shown in the accompanying drawings in which Y Figures 1 and larepresent a side elevation `of the machine.

Figure 2 is a plan view of that portion of the machine shown in Figure1a. Figure 2a is a detail plan similar to aI portion of Figure 2 butillustrating a modilication.

Figure 3 is perspective view of the bead 'forming mechanism, the tubebeing shown in dotted lines.

Figure l is a` perspective view of the mandrel and the tube ejector. 40Figure 5 is a detail section taken on line 5 5 of Figure 4.

Figure 6 is an end elevation of the ma chine looking from the right inFigure 1a.

Figure 7 is a plan of a portion of the sheet after the printing andcertain of the cutting operations have been performed.

Figure 8 is a view similar to Figure 7 but.

showing the sheet in a more advanced stage of the process. e n

Figure 9 is a plan of the blank severed from the sheet preparatory 'towinding it into tube form.

Figure 10 is a perspective view ofthe finished tube, a portion beingbroken away to illustrate the bead construction which pretVegteunrolling of the convolutions of the Figure ll is a section on line11-11 of Figure 2.

Figure l2 is a detail section on line 12--12 oi. Figure 11, parts beingbroken away.

Figures 13, 14 and 15 are sections on lines 12B- 13, lll-lil and 15u-15,respectively, of Figure 2.

Figure 16 is la section along line 16-16 of.

Figure 2 at the upper portion ofthe machine.

Figures 17, 18 and 19 are detail sections on lines 17-17, 18-18 and19--19, respectively, of Figure 6.

Figure 20 is a detail perspective of the beading tool carrier block.

Figure 21 is an enlarged detail sectional view similar to a portion ofFigure 19 and showing by dotted lines certain parts in differentpositions.

Figures 22 to 25 are det-vail views illustrating the bead formingmechanism in differentportions of its cycle of operation.

The paper to be formed into the tubes may be taken from a suitable rollindicated at l (Figure 1), the strip being of a width somein carriages 4.and 5 slidable on guide rods G and 7. The rods G have Vheads 8 at theirouter ends between which and the carriages 4, are positioned springs 9which act to press the carriages away from these heads. The carriages 5are pressed toward the free endot' the rods 7 by means of springs 10reacting between them and collars 11 fixed to these rods. During theintermittent diced,

pull is exerted on thepaper strip in a direction to move the roller 4on' the carriages away from the roll of paper, and the roller on thecarriages 5 toward the roll of paper against the tension exerted by thesprings 9 and 10.' As the intermittent feed of the paper stops, thesesprings act to move the rollers in the opposite direction and take upthe slack in the paper which continues to be unwound from the roll 1.

After passing through this tension takeup device the paper passesthrough an ironing mechanism at B which is'so designed as to remove thecurl which has been imparted to the paper by being wound in roll form.This ironing device accomplishes this object by bending the paper in thereverse direction to the curl of winding. It comprises a bar 12 which ispivoted at opposite ends as at 13 and 14 in side frames 15 and 16 of themachine as shown best in Figures 1, 1x1 and 2. This bar 12 has a fiatface over which the sheet of paper passes and cooperating with this faceis a bar 20 which is spring-pressed toward the bar 12 to hold the paperparallel to this face as by means of coil springs 21 surrounding bolts22 passing through slots 23 in the bar 20 and threaded into the bar 12.One of the pivots 14 of the bar 12 is extended outwardly of the sideframe 16 in the formV of a rod or pin 25 which is threaded at its outerend for the reception of an adjusting nut 26. This nut bears against aWasher 27 and betweenl the washer 27 andthe machine frame 16 ispositioned a coil spring 28. This spring 28, acting on the washer 27 andthe nut 26, pulls the bar 12 against the inner face of the fralne 16,thus imposing a frictional resistance to the pivotal motion of this bar,but permitting this bar, together with the bar 2() carried thereby, t9be turned to any desired angular position. By this means the directionand amount of the bendin action imparted to the paper as it passesetween these bars may be adjusted in conformity with the amount of curlin the paper as it comes from the roll 1 so that the curl may besubstantially neutralized. This is of importance in feeding thesucecessive lengths of the strip to the tube-forming mechanism as willlater appear, it being much easier to properly present these lengths ifthey are fiat rather than curled as they would be if it were not for theironing'device B.

Next the paper passes through a printing mechanism at C by whichsuitable printed matter which will appear on the outer face of the tubeswhen complete may be im pressed at the proper intervals on the sheet ofpaper. As best shown in Figures 1, 2, and 11. this printing devicecomprises a pair of spools 30 and 31 carrying an ink ribbon 32 whichpasses from one to the other beneath a suitable platen 33 and beneathwhich the strip of paper is drawn. Guide rollers 34 may be positioned atopposite sides of the plate 23 to retain the ink ribbon in properrelation thereto. Beneath the strip of paper is positioned the printingplate which is supported on the upper face of a plunger head 35. Theplunger for this head extends through a vertical guide member 36 havinga cover plate 37 and its lower end is connected as by a link 38 pivotedthereto at 39 with an eccentric strap 40, to which the opposite end ofthe link 38 is fixed at 41. This strap surrounds an eccentric 42 fixedto a transverse shaft 44 journaled in bearings in the frame members 15and 16. The shaft 44 is driven in time with the other mechanisms of themachine through a shaft 45 extending longitudinally between the side.frames 15 and 16. this shaft having fixed thereto a beveled gear 46meshing with a similar gear 47 fixed to the shaft 44. The shaft 44 alsoactuates means for feeding the ink ribbon from one to the other of thespools 30 and 31. For this purpose it is extended outwardly of the frame15 and carries at its outer end a cam 50 on which rides a cam follower51 journaled at the lower end of a thrust rod 52. This thrust rod isvertically slidable through a pair of bearing brackets 53 and a spring54 surrounding this rod and bearing at its upper end beneath the underside of the upper bearing 53 and at -its lower end against a collar 55carried by this rod acts to hold the cam ro'ller 51 in contact with thesurface of the cam 50. The upper end of the thrust rod 52 is pivotallyconnected to a link 55, the upper end of which is pivoted to a crank arm56 having an elongated hub 57 fixed to a rock shaft 58. This rock shaftextends lengthwise of the frame member 15 adjacent to its upper end andis journaled in spaced bearings 59 fixed thereto. One end of this rockshaft 58 carries an arm GQ, the outer free end of which extends beneatha bar or rod 61 vertically slidable through a sleeve 62 at the outer endof a plate 63. This plate 63 may extend across the upper edges of theframe members 15 and 16 and may support the guide rollers 34 and theprinting plate 33. The upper end of the bar 61 engages the outer end ofan arm 65, the inner end of which is pivoted at the axis 66 of the inkribbon spool 31. The arm carries a pawl 67 pressed by a spring 68 intoengagement with a ratchet wheel 70, fixed to the pivot shaft 66 of thisspool 31, so that at each upward thrust imparted to the bar 61 the pawl67 acts to turn the ratchet wheel 70, while at each downward motion ofthe thrust rod 61 the pawl retracts for engagement with another ratchettooth, the spool being prevented from retrograde movement by means of aspring holding pawl 71 which engages the ratchet teeth. Between eachprinting movement of the printing head 35, therefore, the spool 31 isrotated slightly in order to present a fresh portion of the ink ribbonfor each printing action. In order fib til

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i the lower portion of the bar 80 adjacent tol that the ink ribbon maybe turned backwardly on to the spool this spool 30 is provided with adriving shaft having a crank handle 76 thereon. Each of the ink ribbonspools may be retainedlbetween nuts 77 threaded on opposite ends of asleeve 78 (see Figure 12) which may be slid in position over lthecentral shaft. The shaft 75 for the non-driven spool 30 may have a pin79 extending laterally thereof, engaging in a slot in one end of thesleeve (Figure 12). By a similar pin and slot construction the spool 31may be rotatably connected with the shaft 66 to which the ratchet wheel70 is fixed.

In order that the spools may be removed from their pivot shafts` and newribbon spools substituted, a readily removable retaining device for thespools has been provided. This comprises a bar 80 having its oppositeends formed to engage over the free ends of the spool shaft-s 75 and 66.and the sleeves 78. This bar 80 is shown as pivoted substantiallycentrally of its length at 81 between lugs 82 extending upwardly fromthe plate 63. As shown bestin Figure 12,

the pivot 81 is provided with a cam surface 84 on which rests the freeend of a spring arm 85 fixed by bolts 86 to a block 87 extendingupwardly from the plate, 63. This spring finger 85 acts to yieldinglyhold the ends of the bar 80 up against theshafts 66 and 75 and sleeves78 so as to retain the spools in position thereon. The bearings Vstrippasses over a cross plate and beneath a guide plate 101 lixed to itsupper face. It then passes over a guiding anvil plate 102 having acentrally depressed stripreceiving seat 103. Adjacent one end, thisplate 102 is provided with a shear blade with which cooperates a blade104 on a knife arm 105. This knife arm is pivoted diagonally to thelength of the strip on a pivot pin 106, and'is held up against a bearing107 on the plate 102 to press the blade 104 against its mating fixedblade by means o f a spring 108 surrounding the pivot 106 and bearingbetween the knife arm and a washer and adjusting nut 110 on the pivot.The `outer end of the knife arm 105 is connected A by an adjustable link111 to a sleeve 112 slidable axially along a long crank pin 113. Thiscrank pin is supported from the rock shaft 58 by means of arms 115. Theamount i l to which the long crank pin 113 may be depressed, thisdetermining the extent of opening of the shearblades, may be determinedby an adjustable bolt threaded into a' yThe plate 102 is adjustablelengthwise of the frame members 15 and 16, the sleeve 112 engaging thepin 113 in all adjusted posi' tions of the plate, suitable guide pieces120 being fixed to these frame pieces as indicated best in Figures 2 and13, and each of these guide pieces having an outwardly extending rib 120beneath which engages a strip 121 carried at the corresponding end ofthe plate 102. It will thus be seen that the position lengthwise of thesheet at which the shear blade 104 will cut the edge portion of thestrip may be adjusted lengthwise of the strip without affecting itsoperative connection to itsv driving mechanism. As shown this shearblade 104 makes spaced incisions from one edge of the sheet as shown inFigure 2 at 130.

Next the paper passes to the intermittent feeding device by which it isdrawn from the roll through the ironing, printing, and edge cuttingmechanisms. This feeding mechanism is best shownin Figures 1, 2-andstrip passes, this drum being fixed to a shaft 14. It comprises a drum150 over which the 151 extending through the frame portions 15 and 16.The shaft 151 also carries fixed thereto a gear wheel 152`which mesheswith a pinion' 153 fixed to a shaft 154 carrying a roller 165 above thedrum 150. This shaft 154 is journaled in bearing boxes 155 slidablevertically in pedestal aws 156 fixed to the upper edges of the framepieces 15 and 16. The upper edges of these jaws 156 are joinedby a yokemember 157 Through this yoke member are passed vertically extending rods158 having shoes 159 at their lower ends which are pressed by springs160 against the shaft 154 on either side of the friction roller which isthus adapted to press lum against the upper face of thestrip of paperand force it into engagement with the periphery of the drum 150. Thepressure of the springs V160 may be more or less overcome by means of alink through which4 vthe upper ends of the rods 158 extends, these rodshaving'nuts 171 threaded on their up- 'per ends above this link. Betweenthe nuts 171 a screw -17 2 passes through the link 170, and bears at itslower end against the upper face of the yoke 157. 172 as by means of itsknurled head 17 3 the links 170 may be raised, thus pulling up- Byturning this screw llu warly on the rods 158 against .the action` of thesprings 160. The drum 150 and the fric--v` tion roller 165 coo 1 eratingtherewith are intermittently driven in. order to feed the strip of papertherebetween. For this purpose.I the shaft 151 is extended through the-frame member 15 and hasv journaled thereon a gear '180. y This gearcarries a disk 181 of larger diameter than the gear and this disk haspivoted thereon a pawl 182 which is pressed by la spring 183 intoengagement with the teeth of a ratchet wheel 184 fixed to the shaft 151.By this means rotation of the gear 180 in one direction is caused totransmit motion by means of pawl 182 to the ratchet wheel 184 and thenceto the drum 150 and the friction roller 165, while rotation in thereverse direction of the gear 180 will not act to turn the drum andfrietion roller, the pawl 182 slipping over the ratchet teeth, afriction disk device 179 on the shaft 151 engaging the frame member 16,preventing reverse rotation of the drinn and roller. This gear 180 isoscillated to impart the desired intermittent rotation to the drum 150and the friction roller to feed the strip of paper b means of a gearsector 185 meshing therewith and journaled on a bushing 186eccentric-ally pivoted on a stub shaft 187. This bushing 186 has an arm188 extending therefrom, opposite sides of which may be engaged byadjusting bolts 189 threaded through a pair of lugs 190 extendingoutwardly froin the frame piece 15. By manipulation ot' these bolts 189the angular position of the bushing 186 may be adjusted, thusdetermining thecenter of oscillation of the sector 185. Extending fromthe sector 185 is an arm 192 to the end of which is pivoted at 193 theforked upper extreniity of a link 194. The lower end of this link ispivoted on a crank pin 195 ad- 'ustable radially in a crank arm 196carried y a shaft 197 which extends through the frame pieces 15 and 16.This shaft is provided with a beveled gear 198 with which meshes asimilar gear 199 on the shaft 45. This beveled gear 199 also meshes witha similar beveled gear 200 on a shaft 201 in alinement with the shaft45, this shaft being for a purpose which will later appear. It will beseen therefore thatin time with the up and down motion of the shearblade 104 and the printing device, the strip of paper is caused to moveforwardly intermittently.

After passing through this feed device the strip passes beneath a cutterblade 210 extending diagonally aeross the width of the paper strip andinclined oppositely to the blade 104. This blade 210 is carried by aknife arm 211 pivoted at 212 on a bearing portion 213 npstanding from aplate 214. This plate 214 is adjustable lengthwise of the frame members15 and 16 on Ways 215, as shown best in Figure 15, similarly to theplate 102 on the guide pieces 120. The pivot lug 213 is positioned aboveand adjacent to the frame member 16 and its outer end has pivotedthereto an adjustable link 220, the lower end of which is pivotallyconnected to a sleeve 221' similar to the sleeve. 112 and which iss'lidable on a long crank pin 222 supportedv by crank arms 223 adjacentits opposite ends from a rock shaft 224. This rock shaft is journaled inbearings 225 fixed to the outer face of the frame member 16. One ofthese arms 223 has pivotally connected thereto a link 226, which,`inturn, is pivotally connected to a thrust rod 227 vertically Inovablethrough bearing members 228 extending outwardly from the frame member16. This thrust rod is normally held downwardly by means of a spring 230bearing at its upper end against the lower face of one of the bearings228 and at its lower end against a washer 231 bearing against a in 232passing through the rod 227 to hol a cam follower 233 at its lower endinto contact with a cam 234. TheV crank arm 222 is also drawn downwardlyby means of a spring 235 fixed at its upper end to one of the arms 223and at its lower end, as at 236, to the frame member 16. The cam 234 iscarried by a transverse shaft 240 extending through the frame members 15and 16, this shaft 240 carrying a beveled gear 241 meshing with asimilar gear 242 carried at the opposite end of the shaft 201 from thebeveled gear 200. Outwardly of the frame piece 15 the shaft 240 carriesa gear 245 which meshes with a gear 246 carried by a stub shaft 247.Also fixed to rotate with the gear 246 is a larger gear 248 which mesheswith a gear 249 on a'transverse shaft 250. The shaft 250 has fixedthereon a sprocket wheel 251 over which passes a sprocket chain 252which engages another sprocket wheel 253 on a stub shaft 254. This stubshaft is carried at the outer end of an arm 255 which is pivoted at itsinner end on the shaft 250. At an intermediate point of its length anadjusting bolt 256 is fixed to the arm 255, this bolt extending throughan arcuate slot 257 in the frame piece 15. By this means the angularposition of the arm 256 may be adjusted, this being for the purpose ofadjusting the tightness of a sprocket chain 258 passing over a sprocketwheel 259 mounted to rotate with the wheel 253, this sprocket chainextending to another portion of the mechanism which is adjustably spacedfrom the frame members 15 and 16, as will later appear.

The knife lblade 210 cuts entirely across the width of the strip ofpaper and forms with the slits 130 cut by the knife 104, a series oftriangular waste pieces, as is illustrated at 260 in Figure 8. In orderthat these waste pieces may not he carried along with the lengths to bewound in tubular form, means may be provided for ejecting them from thepath of the strip. Mechanism for accomplishing this function is shownbest in Figures 1, 2 and 15. The shaft 250 is extended outwardly beyondthe gear 249 and has fixed thereto a sprocket wheel 265 over whichpasses a sprocket chain 266. This sprocket chain passes about anadjustable tightening wheel 267 and also about a sprocket wheel 270carried by a shaft 271. This shaft 271 has fixed thereto a lluvLesiones' roller '272 which bears on the upper' faceof the strip ofpaper close to the rear ofthe knife 210 and'holds it against a smallroller 273 freely journaled therebeneath. Pivoted on the shaft 271 is aframe 274 which is connected by a link 275 to the knife arm 211 so thatwhen the knife arm is depressed to cut the strip, the frame 274 isrocked downwardly about the shaft 271 as an axis. The shaft 271 hasfixed thereto a beveled gear 276 which meshes with a similar gear 277fixed to a shaft 278 j'ournaled ltransversely in the frame 274. At theop osite end of this shaft 278 is positioned a riction wheel 279, which,when the knife arm 211 is depressed, is brought into engagement with thetriangular waste' piece 260 between the cut 130, and the cut 280 formedby the knife 210,

4and as this wheel 279 is being rotated by rotation of the shaft 271 asdriven by the sprocket chain 266, this triangular piece'is' fedlaterally out of line with the strip of paper and the lengths cuttherefrom.

In order to remove this waste piece a sufficient distance to' prevent itfrom being fed forwardly with the successive lengths to the windingmechanism, a belt 285 passing over small pulleys 286 maybe brought downin position to receive the waste piece as it lis fed thereto byfthewheel 27 9. This belt may be driven to feed the waste piece'away fromthe strip and for this purpose the inner belt pulley 286 is fixed to ashaft 287 journaled in the frame 274, this shaft 287 being geared to theshaft 278 through gears 288 and 289 on these respective shafts and anintermediate idler gear 290.

In some cases it may be desirable 'to dispense with the necessity ofmeans for feeding the waste laterally from the strip. This may beaccomplished by utilizing a modified form of knife carried by the knifearm 105 in place of the blade 1047 this being illustratf ed in Figure2a.

The knife shown in. this .figure at 300 is V shaped and cooperates witha V shaped slot 301 in an extension 30.2 of the adjustable plate 303which is mounted to traverse the guides 120 of the fra-me portions and16 in the same manner as and in place of the plate'102. Q With thisconstruction the triangular waste piece is cut' out entirely by theknife 300 and is carried down the slot 301 the knife out of the way. Thepaper then passes as in the form previously described to the knife 210which completes the Vsevering of the strip as shown lby the dotted line-y in Figure 2a in line with one side of the V shaped slot.

It will be noted that the knives for forming the diagonally -arrangedcuts in the sheetare adjustable toward and from each other by adjustmentof the plates 102 or 303 and 214 along their guideways and also that'the extent of feed movement imparted to the paper at eachsuccessiveactuation is adjustable by adjusting the position of the crank pin 195radially inthe crank arm 196,-

the knife 210 pass over an extension plate 310 projecting fro-m theplate 214 into position to be gripped by the winding mechanism F bywhich the lengths are wound into tubular formjand one end beadedinwardly. These lengths are wound upon a mandrel 320 shown detached inFigure 4, there being a mandrel of the proper dia-meter for each size oftube to be formed interchangeably in the machine. As therein shown thismandrel comprises a flute-d portion which preferably tapers slightly.being smaller at its free end. This mandrel at its larger end isprovided with a reduced portion 321 which is journaled in a bearing 322at the upper end of a stand 323 which is l supported on a table 324.A'This table also carries the frame portions 15 and 16 heretoforedescribed which are joined at their lower ends by a Ybase portion 325.The frame port-ions 325, 15 and 16 are adjustably mounted on the table324, being movable toward and from the stand 323, this adjustment beingfor the purpose of providing for different lengths of paper sectionswhich are to be wound in roll form so that as they leave the cuttingknives 210 their forward endsmay project toward the winding mechanisminto cooperative relation therewith. in accorda-nce with the length ofthe sections to be wound. This mandrel 320 is formed as a hollow sleeveand has a slot'330 diametrically thereof and extending throughout themajor portion of the length of its fiuted portion. Within this mandrelis axially slidable a rod 331, which, within the flut-edv portion ofthev mandrel has journaled thereon and held, asby means of a screwv332,a head 333. This head has oppositely disposed projections 334 whichextend through the slot 330 and into sockets 335 cut in a pair of ringsections 336 which are formed to ride lengthwise of the fiuted portion of the mandrel and are held toget er surrounding this fluted portion bymeans f a spring ring 337 which, is snapped therearound. These ringsections'336 form an ejector, which, when the rod 331 is moved axiallytoward the free end of the mandrel, calises the paper tube which iswound `thereon to be ejected endwise therefrom. The mandrel is rotatedto wind scribed, and the rotation is then stopped and the completed.tube ejected.

For the purpose of rotating the mandrel during the winding andbead-forming operations, a sprocket wheel 340 is carried on the mandreloutwardly of the bearing bracket 322 and over this sprocket wheel passesa Sprocket chain 341 which passes about a sprocket wheel 342 looselyjournaled on a shaft 343 extending laterally of the stand 322 near itslower end. As shown this sprocket chain passes about an idle tensionpulley 360. The shaft 343 is provided with a sprocket wheel 361 overwhich may pass a sprocket chain 362 from any suitable source of power,and it is also provided with a sprocket wheel 363 over whichpasses the.sprocket chain 258 by which the strip-feeding, printing and cuttingmechanisms are actuated. LThe shaft 343 at one end is provided with apinion 344 which meshes through intermediate gears 345 and 346 with agear 347 fixed to the end of a shaft 348. The shaft 348 carries a facecam 349 on which bears a cam follower 350 fixed to a clutch lever 351.This lever is pivoted on a bracket 352 and at its end opposite to thefollower 350 bears between the fianges of a collar 353 to which is fixedone element 354 of a. clutch, the opposite element 355 of which is fixedto the sprocket wheel 342. The clutch element 354 is splined to theshaft 343 and is normally urged axially of this shaft into clutchingengagement-with the element 355 by means of a spring 356 surroundingthis shaft and bearing between the clutch collar 353 and a collar 357pinned or otherwise fixed to l the shaft 343. As long as the clutchelements 354 and 355 are in engagement with each other, rotation of theshaft 343 acts to rotate the mandrel through the sprocket chain 341.When a finished tube is to be ejected from the mandrel, the cam 349 actsto disconnect the clutch elements 354 and 355 so as to stop the rotationof the mandrel.

The shaft 343 is also utilized to actuate the ejector mechanism. Forthis purpose one end thereof has fixed thereto a beveled gear 365 whichmeshes with a beveled gear 366 fixed to a vertically positioned shaft367. This shaft 367 above a bearing 368 therefor carries a cup shapedclutch element 369. Riding in this cup shaped element is a mating clutchelement 370 positioned at the lower end of a shaft 371 in verticalalinement with the shaft 367. The clutch element 370 has slidablymounted therein an axially movable clutch key 372 having a lug 373 onits lower face which may be projected into a depression 374 in the upperface of the clutch element 369 so as to couple 'the element 370 theretofor rotation. This lug 373 is pressed downwardly so as to enter thisdepression whenever it is permitted to do so, by means of a spring 375seated in a socket 376 in the element 370 and bearing at its lower endon a portion of the key 372. The element 370 is provided with a reducedupper portion 377 which forms a horizontal annular shoulder 378 on whichrides a wedge element 379 which is projectable horizontally toward andfrom the axis of the shaft 371. lVhen projected toward this axis itpresents a wedge face over which a lateral extension 380 of the key 372rides so as to move this key upwardly against the tension of the springr375 to remove the lug 373 from the depression 369, thus to unclutch the`shaft 371 from the shaft 367. This unclutching is effected by means ofa face cam 381 fixed to the shaft 348 against which rides a camfollower' 393 carried by the inner end of the wedge element 379. The camfollower is held against the cam by means of a spring 382 engaging a pin383 on this wedge clement and a lug 384 fixed to a portion of the stand323. The cam 381 is provided with a depression 385 therein and when thisis opposite to the cam follower the spring 382 retracts the wedgeelement, permitting the shaft 371 to become clutched to the shaft 376,but this depression is so short that it permits only a single revolutionof the shaft 371 at each clutching engagement, whereupon the shaft 371is disconnected during the remainder of each rotation of the shaft 348.The shaft 371 is journaled in suitable bearings 386 and above the upperbearing 386 it carries a crank arm 387. Journaled on a crank pin 388 ofthis crank arm is a connecting rod 389, the inner end of which ispivoted at 390 to a block 391 mounted to slide in ways 392 arrangedparallel to the mandrel. This block 391 has fixed thereto the outer endof the rod 331. It will thus be `seen that whenever the shaft 371 isclutched to the shaft 367, the rod 331 is given a single reciprocationwhich acts to move the ejector ring 336 from its retracted positionadjacent to the bearing 332 toward the free end of the mandrel andreturn. This movement toward the free end of the mandrel acts to ejectthe tube which has been wound thereon and its retraction permits asucceeding length of paper to be presented and wound.

In order to permit the winding of the sheet material, means forpresenting each length of paper thereto have been provided, these meansbeing shown best in Figures 19 and .20. Positioned beneath the flutedpor tion of the mandrel is a vertically slidable rod 400 which carriesat its upper end a head 401. This head has pivoted thereto a pair ofarms 402 which have journaled at their upper ends rollers 403. Thesearms 402 are pressed toward each other as far as is permitted by stops404 carried by the head 401 by means of a spring 405 fixed at itsopposite ends thereto. The forward end of after which the rollers arelowered to their strip-receiving position. This raising and lowering ofthe rollers is effected by means .of a cam 406 having a cam groove 407in one side face in which rides a follower 408 carried at'the lower endof the rod 400. This ca1n406 is fixed to the shaft 348.

Means is also provided for holding theA strip to be wound down againstthe rotating mandrel at the same time that the rollers 403 are movedupwardly. As shown this means comprises a segmental shaped cap 412 whichis Vfixed to a bracket 413 carried byA a vertical rod 414 slidable. inbearings 415 and 416 fixed to the stand 323. A portion of this rod 414intermediate vits ends lis of enlarged diameter and threaded as at 417and'on this threaded portion is carried a pair of knurled adjusting nuts418 and`419 which may be fixed in adjusted position by means such as setscrews passing radially therethrough and having their inner ends engag.

l ing the threaded portion 417. Between the nuts 418 and 419 ispositioned a sleeve 420 slidable on thethreaded portion and this sleeveis normally held pressed against the upper nut' 418 by means of a spring421 reacting between its lower face and the nut 419. This sleeve 420 isprovided with a pair of laterally extending pins 422 with which engagesthe bifurcatedand slotted extremity 423 of a lever 424 fulcrumed at 425ona bracket 426 carried by a horizontalv frame portion 427 of the stand323. The inner end of this lever 424 passes through a slot 409 in therod 400 beneath the head 401. When the head 401 lowers to lower the,rollers 403 from cooperative relation with the mandrel, the lever 404iscontacted and rocked in a direction to raise the cap member 410 awayfrom the mandrel, while when the rollers 403 are raised to present thestrip of material to be wound to the rotating mandrel, the cap 410 isallowed to descend by the weight of the parts into cooperative relationwith the mandrel. This cooperative position of the rollers 403 and thecap isA y shown clearly Vin dotted lines in Figure 21,

4while the inoperative position of these parts is shown in full lines. 4

The strip of paper lto be wound extends somewhat beyond the free end ofthe manspring 449 (see Figure 6).

drel 4321 and means areprovided for forming this extended portion into abead which i .forms an internal annular shoulder preventing unrolling ofthe paper after it is ejected from the mandrel land also serving as aledge against which the end coin ofa stack positioned within the tubularcontainer formed by the roll may engage. This bead- Ving device is shownin ldetail in Figures 3,

16, 17, 18 20, and 22 to 25. Beyond the free end of the mandrel thestand 323 is pro-y vided with an upwardly projecting post 440 (Figures2, 6 and 17) to which is fixed a bracket 441 having a guideway 442 atits upper end in which is slidably mounted a rack bar 443, this rack barmoving in a plane lengthwise of the mandrel. Meshing with the teeth of.this rack bar is a gear sector 444 (Figure 3) fixed to the upper end ofa rock shaft 445. The lowerend of this rock shaft is formed with Ia camfollower 446 (Figures 6 and 17) carried on a crank arm 447 and thisfollower is held against a cam face on a cam 448 carried by the shaft348 bv means of a 443 carries at one end an upwardly-extending post orpin 450 (Figures 18, 22 to 25). Pivoted tothe upper end ofthe post 440is afframe 455 (Figures 2 and 18), one side 456 of which is prolongedbeyond the pivot and is extended downwardly `as at 457 to form a head458 through which is passed a bolt 459. A spring 460 surrounds this boltand bears between the head 458 and aspring seat portion 461 formed onthe post 440. A. nut 462 on vthe inner end ofthe bolt forms rockingmotion of the frame 455 in one direction. At the outer end of this frameA455 is carried a rectangular bar 465 which serves as a sliding guidefor a carriage or block 466. As shown best in Figures 20 and 22 to 25,this carriage 0r block is provided with a pair of laterally extendinglugs 467 and 468 between which the post or pin 450 extends, these lugsbeing spaced apart suiiiciently to permit a limited amount of motion ofthe pin 450 with the rack bar 443` of the tube and prevent it from beingderformed Ioutwardly While its end is being beaded.V This carriage'466carries a beadforming tool 471. This tool is provided at one end with ahooked portion 472 extending laterally from a shank 473, which as Y theshank portion is pressed against the end Aof the tube actsto turn thisend inwardly lengthwise of the tube and then outwardly The rack bar `anadjustable stop to limit the extent of lll) wise position of the toolthatV the extended Y shank portion 480 overbalances the hook portion472, but when the frame 455 is rocked.

downwardly into the position shown in Figures 18 and 25, this shankportion 480 strikes upon the upper edge of a guide piece 481 fixed tothe bracket 442 so that it is rocked upwardly as far as is permitted bythe engagement of its lower face against the upper face at 482 of thecarriage block. lVhen in this position, assuming that the pin 450 issuiiiciently near to the lug 467. a latch hook 485 pivoted at 486 totheside of the carriage block is permitted to engage over the shankportion 473 of the tool so as to hold it in this position even after theframe 455 has been raised so that the shank portion 480 is out ofcontact with the plate 481. This latch 485, as shown best in Figure 3,is normally urgedinto its tool engaging position by means of a torsionspring 487 surrounding its pivot screw 486 by which it is connected tothe carriage block 466. It is provided, however, with a laterallyextending lug 489 which extends into the path of motion of the pin 450as it moves with the rack bar 443.

lVhen the latch 485 is in engagement with the tool and the frame 455 isupwardly rocked into the position shown in Figure 22, the hook of thetool is in position so that when the carriage and the tool are movedYtoward the end of the mandrel, it is in position, as in Figure 23, toengage and crimp inwardly the end of the tube into the condition shownin Figure 10 at 475. In this position, however7 the hook 472 engages theinner portion of the crimped or beaded end and could not be retracted bywithdrawal of the carriage 466 without damaging the bead. For thisreason as the rack bar 443 is retracted, it first engages the lug 468and on its continued rearward motion pulls the latch 485 out of Contactwith the tool, as shown in Figuren24, whereupon the heavy end 480thereof is permitted to rock the hooked end of the tool toward the axisof the mandrel and out of Contact with the bead. Further retroactivemotion of the rack bar 443 brings the pin 450 into contact with the lug468, thus imparting a positive withdrawal movement to the carriage 466,and carries the tool therewith away from the end of the tubeL The toolcarriage slide 465 is held upwardly in cooperative relation to the tubeend during this time by reason of the fact that the forward endrof theframe 455 extends over the head 401 of the paper presenting mechanismand is contacted by a spring plunger 490 thereon.

Then the tool carriage has been retracted to bring the tool out ofcooperative relation with the tube and the paper presenting means islowered to receive the forward end of a succeeding length, the guide bar465 is allowed to fall into the position shown in Figures 18 and 25,this action being facilitated by the action of the spring 460. In thisposition the tool shank 480 contacts with the guide plate 481 as beforedescribed, and is returned to its operative tilted position where it isengaged by the latch 485 as soon as the pin 450 has moved farwardly toan extent suiiicient to permit this action prior to the next forwardmotion of the tool for operation on the succeeding tube. lVhen in thislowered position, as shown in Figures 18 and 25, no obstruction isoffered by any of the parts to the ejection of the finished tube overthe mandrel end. The tube is thus thrown oit from the mandrel over thebead-forming mechanism and is received by any suitable conveyor means asat 495 (see Figure 6) by which it is conveyed away from the machine.

In order to insure the proper relation of the mandrel to the lengths ofthe paper to be wound so that the lengths mayY be wound with their edgeseven, provision is made for adjusting the stand 323 on the table 324. Asshown in Figures 1, 2 and 6, the table 324 has a plurality of lugs 500upstanding therefrom between which the stand 323 is positioned.Adjusting bolts 501 are threaded through these lugs, the inner ends ofthe bolts bearing on the outer face of the base portion 502 of thestand. These lugs 500 are spaced sufficiently to permit the desiredrange of angular, transverse and longitudinal adjustment of the stand inany direction in a substantially horizontal plane therebetween. The faceportion 502 may be slightly tapered upwardly so that the pressure of thebolts 501 thereon tend to clamp the stand against the table.

Having thus described an embodiment of this invention it should beevident to those skilled in the art that various modifications andchanges might be made therein without departing from its spirit or scopeas defined by the appended claims.

I claim: Y

1. A machine of the class described comprising means for feeding a stripof indeterminate length, means for cutting inwardly from one edge of thestrip at spaced points, means for then severing the strip laterally insuch relation to said cuts as to form lengths each pointed at itsforward end in the direction of travel of the strip, a windingmechanism, means for successively presentthen ejecting the tube fromsaid windingl mechanism.

2. A machine of the class described comprislng ymeans for feeding astrip of sheet material, means for cutting inwardly from' one edgethereof at intervals at an oblique` angle to the length of the strip,means for severing the sheet into lengths along oblique linesintersecting the inner ends of said cuts and deining therewithtriangular cutouts spaced along said edge, means for removing saidcutouts, and means for forming each of said lengths' into a tube.

3. In a tube forming machine, means for winding a strip into tube form,and a hook movable against one end of the tube to turn said end inwardlyto form a circumferential bead, and then movable toward the axis of thetube so that it may be withdrawnwithout hindrance from said bead.

4. In a container forming machine, means for rotating a tube about itsaxis, means for moving from and pressing against the end of the tube atool shaped to turn said end inwardly to form an internalcircumferential bead thereon as said tube is rotated, and means formoving said tool toward the axis of the tube to free it from 'said beadbefore its retractive movement.

of the tube to turn said end to form a cirv 5oy v as it is rotated bythe rotation of said man-4 cumferential bead and orretracting the toolafter the bead 'has been formedmeans for causing said tool to move outof aline 'ment with said tube at each retraction, and

means then acting to eject the tube lfrom said mandrel.

6. In a machine of the class described, a mandrel, a tool havin a hookedportion, means for rotating said mandrel and for winding av stripthereon to form a tube, means for moving said tool to press its hookedportion against the end of the tube drel, thereby to turn said end toform a circumferential bead, and for thereafter terial to said man relto be rolled into tu? bular form by its rotation, a tool, means formoving said tool toward and from one endof the tube tovform over saidend in a man-4 ner to prevent unrolling of the tube as the tube rotatesand then to retract '-thererom, means for stopping the rotation of saidmandrel after the tube end has been so formed over, and means forejecting the tube from said mandrel while said mandrel is stoppedpreparatory to the presentation of a succeeding length of sheet materialthereto.

8. In a machine of the class'described, a mandrel, raising and loweringmeans for successively presenting lengths of sheet .material in`position .to be wound in'tubular form on said mandrel, a guide membermovable bodily with said presenting means, a tool carriage movable onsaid guide member toward and from said mandreha tool rockable on saidcarriage and normally biased to an inoperative rocked position, a latchfor holding said tool locked' inoperative positlon, means acting to movesaid carriage toward said mandrel when said guide member is in raisedposition and a tube has been formed on said 'mandrel tocause said toolto turn the end of said tube to form a bead thereon, and then to releasesaid latch and permitsaid tool to swing into inoperative position andthen to retract said carriage fromsaid mandrel, means acting on the subisequent lowering of said presenting means to return said tool to'latchedposition, and means acting while said guide member, carriage and toolarein lowered position for ejecting the beaded tube from said mandrel.

9. In a machine of the class described, a mandrel comprising a sleevehaving a trans- 7 verse slot therethrough, a rod slidable axially withinsaid sleeve, a head on said rod having portions extending throughsaid'slots, a sectional rin-g surrounding said sleeve and hav ingsockets to receive the ends of said extending portion, `and meansorholding the sections of said ring in assembled relation wherebysliding motion of said rod imparts sliding motion to said ring.

10. In a machine of the class described, a mandrel comprising a sleevehaving a transverse `slot therethrough, 4 a rod slidable -axially withinsaid sleeve, a head on said rod having portions extending through saidslots, a sectional ring surrounding said sleeve and having sockets toreceive the ends of said extending portion, and a spring ringsurrounding said ring sections` for holding them in assembled relation.

11. In a machine of the class described, a

mandrel on which lengths of sheet material may be wound, means forfeeding the lengths successivelyA to said mandrel, and means whereby themandrel may be adjusted angularly relatively to said feeding means.

12. In machine of theclass described, a mandrel on which lengths ofsheet material may be wound, means for. feeding the lengths successivelyto said mandrel, and means whereby the mandrel may be adjusted axiallyrelatively to said feeding means.

13. In a machine of the class described, a

, mandrel on which lengths of sheet material may be wound, means forfeeding the lengths successively to said mandrel, and means whereby themandrel may be adjusted angularly and axially.

14. In a machine of the class described, a mandrel on which lengths ofsheet ma'terial may be Wound, means for feeding the lengths successivelyto said mandrel, and means whereby the mandrel may be adjusted in anydirection in one plane.

15. In a machine of the class described, a mandrel on which lengths ofsheet material may be wound, a stand for supporting said mandrel, atable for carrying said stand, means carried on 'said table for feedinglengths of sheet material successively to said mandrel, and means foradjustably clamping said stand to said table in proper relation to saidfeeding means.

16. In a machine of the class described, a

mandrel on which lengths of sheet material may be wound, ya stand forsupporting said mandrel, a table for carrying said stand, means carriedon said table for feeding lengths of sheet material successively to saidmandrel, spaced lugs extending from said table between which said standis positioned, and adjusting bolts threaded through said lugs andbearing against said stand.

17. In a machine of the class described, a

JOSEPH N. FRANCIS.

